German imports for sales chain RENOLD production technology and the global chain of the industry, had to admire Germany Renold chain of production technology. So how soon expand domestic chain variety, overcome technical difficulties chain, improve the quality of economic growth in the chain, stepped into the transmission chain "productive power," the track is very worthy of our in-depth exploration and research. From the technical point of view, the transmission chain of the domestic product technology development prospects. 1, to learn German Renold Renold chain of production technology essence, to strengthen research foundation working to enhance the technological innovation capability in recent years, at home and abroad have done a lot of experimental research at the fatigue properties of the chain, in particular Germany Renold chain, for guidance products design and manufacture undoubtedly played an important role. Meanwhile, the domestic industry has also taken note of the study of the chain of distribution of the fatigue life of the chain, but it is limited to a variety of reasons, such work was not thorough enough and the system, while the drive chain fatigue fracture analysis, especially microscopic analysis of the fatigue fracture far far enough to break the chain of fatigue crack initiation process, microscopic crack, macroscopic crack growth, fracture failure mechanism and dynamic picture of observation are poorly understood, fracture and failure analysis, inspection and guidance for product design and manufacturing process is to vital link in the chain of transmission of domestic industry in these points on research and exploration is far behind with Renold chain brands imported from Germany. Of course, fracture analysis should not be limited to fatigue fracture chain plate parts should also include roller, sleeve since many parts of the small energy fatigue cracking. In fact, the domestic counterparts have begun to recognize the importance of the chain rule of fatigue life analysis and fracture analysis, and started research work in this area at different levels, and the establishment of typical fatigue fracture patterns within the chain of the industry should be an important foundation work. Importance for high-speed chain drive noise, the industry has long been recognized, but the corresponding research and testing work has been no progress, reason, first of all there is no relevant standards and test specifications within the domestic industry chain, and in order to put the chain transmission noise evaluation and testing methods, there is no solid basis for preliminary research is very difficult to achieve as a support; secondly, scientific noise testing environment and test conditions also limit the conduct of this work. Currently, there are a lot of chain products, such as: automotive engine timing chain, oil pump chain, gearbox transmission chain, motorcycle engine timing chain has gradually introduced a noise evaluation, thereby pulling the chain of the industry on this market demand generation technology strategy. British chain industry for this technology has been developed for a long time, their R & D results is a priority in our step. It should be noted, testing and research noise instantaneous noise value can be limited to a chain drive system, but should be steady or transient signal to noise information is a chain drive system for real-time spectrum analysis to study the frequency of the noise for a time of dynamic characteristics, seek the root cause of the noise and noise reduction measures, which made the relevant evaluation criteria and testing standards on this basis, and this research work first roller chain drive and high-speed toothed chain drive started by the sleeve, will have important guiding significance. Research chain wear mechanism and failure mechanisms for creating famous brand chain products is essential, wear has always been one of the key technical indicators chain most important and most vulnerable products perceived. In recent years, China has begun a study of roller chain, silent chain wear failure mechanisms, microscopic analysis of the main wear mechanisms abrasive wear, fatigue wear, adhesive wear chain, discusses the chain product contact fatigue crack formation, expansion and dynamic process of peeling and cyclic hardening and cyclic softening properties. As the market for the product wear chains increasing demands (ε <1%), a comprehensive and systematic study of roller chains, bush chains, silent chains, conveyor chains, lifting chains, and chains like used special conditions wear characteristics of many products is imperative. As an important way of technology trends, conduct research and wear mechanism and failure mechanisms at high speed, impact, variable speed, variable load, dust, corrosion and other harsh conditions of service, and to explore the wear resistance will be a practical value The key technology and innovation projects. In addition, the engagement of the chain drive mechanism should be carried out basic research and practical techniques, such as the application of high-precision mechanical transmission in the current international Hy-Vo chain and derive the Hy-Vo engagement chain, (in the same chain hanging both external contact can be realized within the contact), Hy-Vo multi-pitch swing pin chain (there are two pitch dimensions at the same hanging chain) and other engagement principle and design method of new chain. 

keywords: St. Ling, Ling St. electromechanical, LSPTC, import chain, Germany Renold chain, chain industry, chain products,